Printing press



Aug. 14, 1934. I T. H. FlsHBuRN PRINTING PRESS Filed Jan. 25, 1929 4Sheecs-Sheet 1 II? II llllllllllb llllllllllll lNvENTOR Aug. 14,1934.

T. H, FISHBURN PRINTING PRESS Filed Jan. 23 1929 4 Sheets-Sheet 2 INVENTOR.

1934- T. H. FISHBURN. 7 1,970,368

PRINTING PRESS Filed Jan. 25, 1929 4 Sheets-Sheet 5 Aug. 14, 1934. HSHBURN 1,970,368

PRINTING PRESS Filed Jan 23, 1929 4Sheets-Sheet 4 1% "IAQR'IIIII). 07/! A INVENTOR Patented Aug. 14, 1934 UNITED STATES PATENT OFFICE PRINTING PRESS Thomas Henry Fishburn, London, England, as-

signor to Bell Punch Company Limited, London, England, a British company Application January 23, 1929, Serial No. InGreat Britain February 1, 1928 '17 Claims.

l folded into a batch of sheets which constitute a newspaper.

;In high speed rotary printing presses of the above mentioned character, it is obvious that with all the type cylinders of the same circumferential length and all positively coupled with one another by gearing, the requisite register of the different webs will be maintained. If, however, it is desired to run a pre-printed web of paper, possibly possessing different characteristics as to quality and printing, into the product of a rotary printing press so as to be combined with and ultimately form part of its delivered productiQn Which' pre-printed web will hereinafter be referred to as the inset, it has hitherto not been found possible to maintain register as between the inset and the webs printed in the rotary press. This diiliculty is not overcome even if the circumferential length of the cylinder printing the inset were made to correspond ex- 80 actly with the type cylinder of the printing press with the product of which it is intended to combine. 'Under the mostvideal conditions it is found that a creep of the inset in one direction. or the other takes place, and being accumulative, the

register correct at the start very soon becomes lost, and the disability is accentuated by variations in the tension of the respective webs at .the different times of printing, the shrinkage that is liable to take place'in the inset after 40 printing, and even by variation of the atmospheric conditions prevailing at the time of the respective printings.

Efforts have been made to provide mechanism which will effect during the printing operation of a newspaper the required registration between speed of the printing press. It is not thinkablethat such means, entailing loss of time and examination of all the product and wastage, could be applied to the modern high speed newspaper printing presses.

Various other mechanisms have been proposed to. correct automatically the registration of an inset, such mechanisms depending upon a momentary contact being efiected from opposite sides of a perforated inset through one of 'the 05 perforations, either electrically, mechanically, or pneumatically, and it has been established that with high speed rotary printingpresses operating at present day speeds, which may run, for example, at 18,000 revolutions per hourand upwards, that such a momentary contact is insufficient to ensure the operation of a correcting mechanism which will effect the movement of the perforated inset..

One of the objects of the present invention is to provide means for efiecting the correct registration of an inset with one or more webs of paper which are being printed upon in a high speed rotary press by causing interdependent means disposed on either side of an inset to cooperate when adjustment is required for a period sufiicient to move the inset relatively to the other webs. In other words, in order to efiect a correction the interdependent means must coact for a period su filcient' to ensure that the correcting mechanism will operate.

A further object of the present invention is to provide means of the above character which will insure that the webs of paper areimmediately brought into registration by means independent of those which maintain the same in such register.

According to the present invention there is provided a high speed rotary printing press which comprises means operable to feed continuously an inset web having pre-printed matter disposed at regular intervals along the length thereof, a conveyor (arranged to engage and travel with the web for at least a predetermined period at the surface speed thereof) associated with means arranged to detect any variation which would place the inset web' out oi register with the product of the press with which it is intended to register, and insure electrically or pneumatically the actuation of mechanism operable automatically to correct any such variation;

Further according to the present invention there is provided ahigh speed rotary printing press which comprises means operable to feed continuously an insetweb of material having pm printed matter disposed at regular intervals along the length thereof, a conveyor (arranged to engage and travel with the web at the surface speed thereof) provided with registering means within which the pre-printed matter is normally arranged to register and mechanism actuated electrically or pneumatically operable automatically to correct any variation in register which may occur between the printed matter and the registering means of the conveyor.

Again according to the present invention there is provided a, high speed rotary printing press which comprises means arranged to feed continuously a web of material having a series of regularly spaced holes displaced along the length thereof, correcting mechanism actuated electrically or pneumatically normally rendered inoperable by the web when the same is in register and rendered operative when the web is out of register by a communication being established for a predetermined period (through one of the said holes) between interdependent means, one moved by a conveyor soas to be disposed adjacent to each hole and the other disposed on the opposite side of the said web.

It is to be clearly understood that the present invention is intended particularly for application to high speed rotary printing presses which operate at speeds in excess ,of those machines which, for example, produce photogravure work.

In order that the invention may be clearly understood, reference is directed to the accompanyingdrawings, in which:

Figure l is a diagrammatic side view of an electrically operated mechanism embodying the subject matter of the invention;

Figure 2 is a plan view of Figure 1 showing in detail the arrangement of the electrical contacts on the conveyor;

Figure 3 is a similar view to Figure 1 showing an alternative mechanism constructed in accord ance with the invention;

Figure 4 is a diagrammatic view of the relay and associated mechanism for controlling the registering mechanism and showing the electrical connections:

Figure 5 is a side elevation of a relay switch and the mechanism for maintaining the said switch in operation;

Figure 6 is a view similar to Figures 1 and 3 but including solenoid mechanism for actuating the registering mechanism;

Figure '7 is an end view of the solenoid mech-' anism shown in Figure 6, and drawn to a large scale;

Figure 8 is a plan view of Figure '7;

Figure 9 is a side view of Figure 7;

Figure 10 is a diagrammatic view showing control mechanism operating on the pneumatic principle;

Figure 11 is a cross-section of a cylinder showing an arrangement of air ports for use in a pneumatically operated arrangement;

Figure 12 is a sectional view at right angles Figure 14 is a part sectional view of. a con- I veyor and an associated air port beneath which the inset is arranged to travel;

Figure 15 illustrates a clutch element controlled by compressed air:

I Figure 16 is a view at right angles to Figure 15 showing a clutch operated by compressed air;

Figure 17 is a diagrammatic view of signalling means for automatically indicating the extent .by which and/or the direction in which the inset has moved relatively to the registering means carried by the conveyor.

Figure 18 is a sectional view of a conventional form of expanding pulley serving to vary the rate of feed; and

Figure 19 is an elevational view of the pulley shown in Figure 18.

Referring to Figures 1 to 5 of the drawings, 1 represents a conveyor in the form of a roller which is arranged to receive an inset web of paper 2 drawn from a reel 12 and arranged to engage with the conveyor 1 over at least a predetermined distance. The conveyor 1 is provided with pairs of electrical contacts 3, 4 and 3, 4 arranged diametrically opposite to one another. Each pair of contacts 3, 4 is preferably arranged about three eights of an inch apart so as to provide a neutral zone between the same which is surfaced with insulating material. An arcuate contact or brush 5 is disposed adjacent to the surface of the conveyor 1 so as to lie concentric with the surface thereof. The inset 2 is provided concurrently with its printing with a series of regularly spaced perforations throughout the length thereof arranged in such a manner as to permit either pair of electrical contacts 3, 4 should any creep, either in a forward or backward direction, take place in the inset 2 to engage with the contact 5 and actuate electrically controlled mechanism serving to retard or advance automatically the inset to bring the same into correct register with the webs of paper which are being deliveredfrom a high speed rotary press.

When the inset 2 is in correct register with the webs of paper being delivered from the rotary press the perforations in the inset move with the conveyor 1 in such manner as to coincide exactly with the neutral zone provided between the two pairs of contacts 3, 4; 3, 4. Immediately the inset fails to register, a perforation in the inset exposes one of the contacts 3, 4 and causes contact to be established between the same and the brush 5, for a period equal to the time necessary for a perforation to move beneath the contact 5, such period being sumcient to enable an electrical circuit to be closed, due to the comparatively extensive contact surface presented by the brush 5. Such a period of time is preferably made longer than is suflicient to permit the electrical circuit to be closed. Once the circuit has been closed the correcting mechanism, for advancing or retarding the inset, is released and may be maintained in operation for any definite set period either by maintaining the circuit closed or by a timing device which is set in operation immediately the circuit is closed. The mechanism for effecting the advance and retard of the inset comprises a pair of electro-magnetic clutches 7 and 8 (Figure 4).

These clutches are controlled respectively by the closing of either of the circuits including the brush 5.and the contacts 3. or 4, the connections between the latter contacts and the clutches 7 and 8 including the fixed contact rings 22 and 23 and the cooperating brushes 24 and 25 carried on the conveyor 1.

Eachof the clutches 7 and 8 is mounted so that one element thereof is keyed to a shaft 9, the other element '1 and 8 respectively thereof being mounted loosely on the shaft 9 and arranged to carry one of two bevel gear wheels 13 and 14, also mounted loosely on the shaft 9. It will be understood that one or the other of each of the cooperating elements of a clutch will be so mounted as to permit slight movement of the same axially of the shaft when the magnetis energized in order that the necessary frictional engagement may be effected between the cooperating clutch elements. Preferably the clutch element carried by the gear is retained against axial displacement in order to ensure accurate meshing of the gear train. The shaft 9 is arranged to be constantly rotated by the motor 46. The bevel wheels 13' and 14 are arranged to mesh continuously with the bevel wheel 69 which is adapted to drive bevel gears 44 through the medium of the chain wheels 19 and 19b and chain 19a. The chain wheel 19 is mounted on a shaft 440. The bevel wheels 44 are arranged to drive a vertical spindle 85a which through the medium of bevel wheels 45 rotates a worm 10 mounted on a shaft 11. The worm 10 is arranged to mesh with a worm wheel 15 mounted on a shaft 16 carrying an expanding pulley 6. v

This pulley, as shown in detail in Figures 18 and 19, may comprise a sleeve 61!, to one end of which the driving gear 65 for the pulley is secured, and at the other end of which a flange 6c is provided. The flange is provided with-slots 6d in which slide bolts of pulley segments 6e around the periphery of which a resilient rim 6f is mounted. The inner ends of the segments 6e form a conically bored boss 6g with which the tapered end 16:; of the shaft 16 engages. Axial movement of the shaft 16 produced by the screw 29 when the same is rotated for correcting errors in registration, causes the tapered end 16a of the shaft 16 to expand the segments6e or permits them to be contracted by the rim 6!.

If a circuit is closed through the magnetic clutch 7 the worm 10 will be driven in one direction whilst if a circuit is closed through the clutch 8 the worm 10 will be driven in the reverse direction. The shaft carrying the pulley 6 is mounted in screw bearings 29, in order that the same may be moved in an axial direction to operate the expanding pulley 6. The pulley 6 drives the rollers 1'7 and 18, through the medium of gearing in order to control the speed at which the inset is unwound from the reel 12. i

The pulley 6 is in turn driven by a belt 6a from a pulley 6b which is secured to the shaft 141 on which the conveyor 1 is mounted. It will be understood that the conveyor 1 and its shaft are rotated by suitable means in timed relation to the operation of the rotary press from which the webs of paper are being delivered, the conveyor 1 preferably traveling at the same surface speed as the press cylinders. Accordingly, when the inset slips on the conveyor 1 an error in registry between the web and the preprinted inset is indicated and this error is corrected by altering the size of the expansible pulley 6 and consequently the speed of rotation of the feed rollers 17 and 18.

In addition the vertical spindle a is screwthreaded and arranged to carry a registering roll roll 85!) results in immediate shifting of the position of the web on the drum 1 by reason of the action of the tensioning means in question.

The retardation or advance of the inset is thus effected automatically through'the intermediary of the magnetic clutches 7 and 8 which cause the spindle 85a to operate in onedirection or the other to effect flrstly an immediate adjustment by means of the registering roll 85b and there- "after efiect a permanent adjustment by the alteration in the size of the expanding pulley 6.

The means of electrically controlling the movement of the shaft 11 and mechanism associated therewith is shown in detail in Figures 4 and 5. In this construction the motor 46 is coupled to the shaft 9 having attached thereto the magnetic clutches! and 8. A pair of relay switches 50, '51 serve to control a subsidiary circuit which includes the magnetic clutches '7 and 8 through cam discs 52 and 53, for the purpose of maintaining one of the magnetic clutches 'l and 8 in operation for a predetermined period after one of a pair of electric circuits 58 has been completed through one of the contacts 3 or 4.

The relay switch 51 comprises a solenoid 59 having an arm 54 pivoted at 55 and provided with a nose 56 arranged to drop into recesses 5'7 formed in a cam disc 53 (Figure 5) and a corresponding arrangement is provided in connection with the relay switch 50 which operates in conjunction with the disc 52. Immediately oneof the solenoids 59 is energized, the nose 56 of the arm 54 is raised out of one of the recesses 57, and contacts 61 are closed to complete the circuit of one of th magnetic clutches '7 or 8. The disc 52 or 53,.when released by the arm 54 commences to rotate and supports the nose 56 of the arm 54 and thereby maintains the circuit of the magnetic clutch which has been energized closed until the nose 56 engages with the second recess. The contacts 61 may thus be maintained closed for a period considerably longer than that during which the circuit 58 of thesolenoid 59 is closed. During these operations it will be appreciated that the magnetic clutches 7 and 8 are in close association with their respective bevel wheels 13 and 14 mounted loosely on the shaft 9, and in gear with the bevel wheel 69. The wheels 13 and 14 are clutched up to the shaft 9 by the respective magnetic clutches directly the relay switches are energized and the bevel wheel 69 carried by a shaft 70 is thereby driven in one direction or the other to actuate the chain 19a and the sprocket wheel 19 which effects the registration of the inset in the manner hereinbefore set forth. The

cam discs 52, 53 are carried on the shaft '70 by slipping clutches operable in Opposite directions and against which they are impressed by springs 71.

In substitution for the rollers 17 and 18, rubber covered rollers 95 (Figure 3) driven from the expanding pulley 6 may be employed to control the speed at which the inset is unwound from the reel 12. I

With reference 'to the electrically operated mechanism shown in Figures 6 to 9, the brush contact 5 is connected to a pair of solenoids 29 and 21 through relay switches 59, 51 (Figure 6) The solenoids are respectively connected to fixed con- .tact rings 22, 23 as shown more particularly in Figure 6. Two brushes, not shown, but similar to the brushes 24 and 25 shown in Figure 2, carried by the conveyor 1 bear on the contact rings 22 and 23, which are thereby placed in'circui't with the contacts 3 and 4 as shown in Figure 6.

In the operation of this arrangement, when the 150 contact 3, for example, is exposed through a perforation in the inset, the solenoid 20 is energized and causes ratchet mechanism to rotate a shaft 26 in one direction, whereas if the contact 4 is exposed through a perforation in the inset, the solenoid 21 is energized to operate the ratchet mechanism to rotate the shaft 26 in the reverse direction. The shaft 26 operates a chain 19a and sprocket wheel 19 which in turn drives the bevel wheels 44 which rotate the spindle 85a, which in turn drives worm gearingqsimilar to the worm gearing 10 and 15 shown in Figure 1.

The ratchet mechanism comprises pawls 35 and. 36 which cooperate with ratchet wheels 3'7 and 38 secured to the shaft 26 The operation of these pawls and ratchets is dependent upon the movement of the cores 39 and 40, which movement is imparted by the actuation of the solenoids 20 and 21. 4

Energization of either of the solenoids 20 or 21 causes the corresponding core 39 or 40 to be raised, which action causes the pair of arms 41 or 42 to move about their pivots on the shaft 26 in such a manner that the pawls are engaged with the ratchet teeth and partially rotate the shaft 26 in one direction or the other according to whichever solenoid is operated. It will be understood that as long as the inset is out of register, the respective solenoid is energized every time either of the exposed contacts 3, 3, 4, 4, contact with the brush 5, whereby the ratchet mechanism will function and registration will be obtained.

In addition to the automatically operated mechanism described, a hand operating gear is provided to assist the automatic control if the creeping oi. the web of paper is too great for immediate control by the automatic devices. This hand operating gear consists of a hand wheel 43 Figure 2, which is arranged to be connected to the screw threaded spindle 85a through the bevel gear at so that the shaft 11 may be rotated manually either when the press is stationary for the purpose of bringing the inset into registration, or the same may be actuated whilst the press is operating to effect a comparatively large adjustment. By operating the hand wheel as both the registering roll 85!) and the expanding pulley 6 are actuated.

Figure 10 illustrates diagrammatically an ar-- covered by a perforation in the inset. Accord ing to which of the ports '76, '77 is opened, the corresponding bellows '74, '75 are expanded as shown with reference to the bellows '74. This move ment of the bellows closes electrical contacts '78, and completes an'electrical circuit which includes similar control mechanism to that hereinbefore described.

Figures 11 and 12 show an arrangement of air ports '76, '77 on the conveyor 1 arranged to operate in conjunction with a rotary air valve '79 which may be used in all constructions of pneumatic or pneumatic-electric adjustment.

tons '74, '75 may, through levers 80, 81 operate clutch mechanism 82 as shown in Figure 13, which, through a worm 83 and tooth quadrant 84, adjusts the position of the web of paper by 1,97o,ses

means of a registering roll 85. If, for example, the vacuum in the spring controlled bellows or piston 74 has been broken, this allows the lever to operate its respective portion of the clutch mechanism 82 which causes the worm 83 to rotate, whereby the registering roll 85 mounted on the tooth quadrant 84 moves the web of paper and effects an immediate adjustment of the web relatively to the conveyor 1, and at the same time operates a worm 9a, which rotates'a shaft 28a through the medium of a worm wheel 27a. The shaft 28a is operable in a like manner to the shaft 16 of Figure 2 to expand the pulley 33a' to give minute adjustment to the speed of the rollers 84a and to advance or retard their speed dependent upon which of the pistons '74 or '75 is brought into operation.

As an alternative to the vacuum control, compressed air control may be employed. In one arrangement, Figure 14, an elongated air port 86 connected to a source of compressed air is mounted above the inset. When either of the air ports '76, 7'7 provided in the conveyor 1 is exposed through one of the perforations in the inset, compressed air from the air port 86 enters either of the pipes communicating with a rotary valve 79 of the kind shown in Figures 11 and 12. In the arrangement illustrated in Figures 15 and 16, a pair of cylinders 8'7, 88 are arranged to oscillate over a fixed double ended piston 89.

When the air is admitted to either of the cylinders 8'7, 88 through the valve mechanism carried by the conveyor 1, the cylinder 8'? or 88 is forced from the piston concerned and operates, through a spring controlled lever 80 the clutch mechanism 91 to move a registering roll, and operate an expanding pulley in the manner described with reference to the construction illustrated in Figure 13. If desired the lever 90 may operate electric contacts as hereinbefore described with reference to the vacuum control mechanism shown in Figure 10.

If necessary, signalling apparatus may be employed to indicate the extent to which and/or the direction in which the "inset has crept relatively to the conveyor 1. In this arrangement additional contacts or sets of contacts 92 as shown in Figure 1'7 are mounted on the conveyor 1. These sets of contacts areconnected as shown diagrammatically in Figure 1'7, with sets of colored lamps 93 to give an indication to the operator of the amount of creep that has taken place, the lamp that is brought intocircuit depending upon the contact that is made by the brush 5 in conjunction with one or other of the contacts 92.

In order that the effective result of the arrangement may be more clearly understood it will be obvious that if the conveyor, in the form of a roller as shown in the drawings, were an impression cylinder and had a companion printing cylinder in operative. working engagement therewith and the inset a plain web of paper, there would be no question of register as between this weband the other production of the printing press. The inset in reality has pre-printed matter thereon with spacings that would more or less agree with the spacings that would result I if the web were printed upon by the conveyor .As airalternative construction of vacuum controlled gear the spring controlled-bellows-or pisand its imaginary companion cylinder. The conveyor in the arrangement herelnbefore described insures that the feed of the inset shall be maintained in exactly the same relationship with the other production of the press and initiates, from time to time, the necessary degree of correction as soon as the relationship between the inset and the other production of the press are out of correspondence.

Having thus described the invention, what is claimed as new and desired to be .secured by- Letters Patent is:

1. In a high speed rotary printing press, the

combination with means operable tofeed an inset web having preprinted matter disposed at regular intervals along the length thereof, of a conveyor arranged to engage the web, and mechanism, part of which is movable with said conveyor, for detecting any variation in the feed of the web which would place the inset web out of register with the product of the press with which it is intended to register, said mechanism being operatively associated with said feed means to control the latter for correcting such variation, and means operable to indicate the extent to and the direction in which the web is out of register with the conveyor.

an immediate adjustment of the web relatively to the conveyor and means operable to maintain the said adjustment, and means disposed upon the opposite side of the web to the said conveyor and cooperating with said registering means when the said indications are displaced forwardly or backwardly relatively to the said registration means for initiating operation of said mechanism. 3. In a high speed rotary printing press which comprises means operable to feed continuously a preprinted inset web of material having a series of successive registration indications disposed at regular intervals along the length thereof, a conveyor arranged to engage and travel with the web for a predetermined period at the surface speed thereof provided with registering means within which the successive registration indications are normally arranged to register, mechanism for correcting any variation in such register, said mechanism comprising a registering roll engaging said web and means for regulating the rate of feeder said web, and means disposedupon the opposite side of the web to the said conveyor and cooperating with said register means when the said indications are displaced forwardly or backwardly relatively to the said registration means for initiating operation of said mechanism.

register, variable ratio gearing for driving said feed means whereby continuous alteration of the rate of feed of the web maybe effected, and apparatus for effecting temporary and immediate change 01' the rate of feed of said web, said de-. tecting mechanism constituting a control means both for said gearing and said apparatus to initiit is intended to register, said mechanism including a device for detecting incorrect registration,

ate operation there of on the occurrence of variation in feed of the web.

5. In a high speed printing press, the combination with means operable to feed an inset web having preprinted matter disposed at regular intervals along the length thereof, of a device adapted to travel with said web, mechanism for detecting incorrect registration of said web and said device, means for permanently altering the rate of operation of said feed means, and means for temporarily correcting registration of said web and said device, said detecting mechanism serving to initiate operation of both of said last named means when incorrect registration occurs.

6. In a high speed printing press, thecombination with means operable to feed at a variable rate an inset web having preprinted matter disposed at regular intervals along the length thereof, of mechanism for ensuring registration of said inset web with the product of the press with which it is intended to register, said mechanism including a device for detectingincorrect registration, apparatus including electro-magnetic means initially energized by said device to regulate said feed means, and means for continuing the energization of said electro-magnetic means after said device has ceased to act.

7. In ahigh speed printing press, the combination with means operable to feedv at a variable rate an inset web having preprinted matter disposed at regular intervals along the length thereof, of mechanism for ensuring registration of said inset web with the product of the press with which apparatus for regulating the action of said feed means, electro-magnetic means initially ener.- gized by said device for initiatingoperation of said apparatus, and means controlled by said apparatus upon operation thereof for continuing l the energization of said electroi-magnetic means for a predetermined period.

8. In a high speed printing press, the combination with means operable to feed at a variable rate an inset web having preprinted matter disposed at regular intervals along the length there-.- of, of mechanism for ensuring registration of said inset web with the product of the press with which it is intended to register, said mechanism including a variable speed gearing for driving said feed means, a rotatable member for regulating said variable speed gearing to vary the continuing speed ratio of the gearing, and a device for detecting failure of the web to properly register, said device being operatively associated with said 13 member to cause rotation of the same.

9. In a high speed printing press, the combination with means operable to feed at a variable rate an inset web having preprinted matter disposed at regular intervals along the length thereof, of mechanism for ensuring registration of said inset web with the product of the press with which it is intended to register, said mechanism including a variable speed gearing for driving said feed means, a rotatable member for regulating said variable speed gearing to vary the continuing speed ratio oi. the gearing, a second continuously driven rotatable member, a device for detecting improper register of said web, and electromagnetic means operable by said device for coupling said rotatable members. I r

10. In a high speed printing press, the combination with means operable to'feed at a variable rate an inset web having preprinted matter disposed at regular intervals along the length thereinset web with the product of the press with which.

it is intended to register, said mechanism including a variable speed gearing for driving said feed means, a rotatable member for regulating said variable speed gearing to vary the speed ratio thereof, a second continuously driven rotatable member, a device for detecting improper register of said web, 'means operable in response to the momentary closing of an electric circuit by said device for coupling said rotatable members, and means for continuing the energization of said last named means for a predetermined period.

11. In a high speed printing press, the combination with means operable to feed at a variable rate an inset web having preprinted matter disposed at regular intervals along. the length thereof, of mechanism for ensuringregistration of said inset web with the product of the press with which it is intended to register, said mechanism including a variable speed gearing for driving said feed means, a rotatable member for regulating said variable speed gearing to vary the speed ratio thereof, a second continuously driven rotatable member, a device for detecting improper register of said web, electro-magnetic means momentarily energized by said device for coupling said rotatable members, and means including an element carried by said first named rotatable member for continuing the energization of said electro-magnetic means for a predetermined period.

12. In a mechanism of the type employing -means operable to feed at a variable rate a web having preprinted matter disposed at regular intervals along the length thereof in register with a movable element, the combination with mechanism for ensuring registration of said web with said element, said mechanism including a device for detecting incorrect registration, of apparatus for effecting an immediate local longitudinal adjustment of the web relatively to said detecting device, and apparatus for regulating the feeding rate of said feeding means, said device for detecting incorrect registration serving to impart an impulse to both said apparatus to initiate operation thereof.

13. In a mechanism for feeding a'web having preprinted matter disposed at regular intervals along the length thereof at a rate normally corresponding to the passage of the preprinted matters in synchronism with a movable element connected in driving relationship with feeding means for the web, the combination with a device responsive to errors/in said synchronism, of a feed regulating mechanism for the 'web for rectifying errors in said synchronism and which comprises means operable toeffect an immediate longitudinal adjustment" of the web relatively to said responsive device, and variable feeding means for the web operable to maintain the said adjustment, the actuation of both said means being adapted to be initiated by an impulse imparted thereto by said responsive device.

14. In a mechanism for feeding a web having along the length thereof of the type employing erable to detect lack of synchronism between said web and said element, of mechanism controlled by said detector device operable to effect an immediate longitudinal adjustment of the web relatively to said device and to effect a permanent adjustment of the feeding means to restore synchronism between said web and said element.

15. In a mechanism for feeding a web having preprinted matter disposed at regular intervals along the length thereof through an extended path at a rate normally corresponding to the passage of the preprinted matters'in synchronism with a movable element connected in driving relationship with feeding means for the web, the combination with a device responsive to errors in said synchronism, of a feed regulating mechanism for the web for restoring said synchronism which comprises means operable to effect an alteration in the length of said extended path of the web and thereby effect an immediate longitudinal adjustment of the web relative to said responsive device, and means operable to effect a permanent alteration in the ratio of the driving connection between said movable element and said feeding means for the web and thereby maintain the said adjustment, said responsive device being adapted to produce an impulse serving to effect an actuation of both the last said means.

16. In a high speed printing press the combination with means operable to feed at a variable rate an inset web having preprinted matter disposed at regular intervals along the length thereof, of mechanism for ensuring registration of said inset web with the product of the press with which it is intended to register, said mechanism including a device for detecting incorrect registration, apparatus for eifecting an immediate local longitudinal adjustment of the web relatively to said detecting device, and apparatus for regulating the actuation of said feeding means, said device for detecting incorrect registration serving to impart an impulse to both said apparatus to initiate operation thereof.

1'7. In a high speed printing press, the combination with means operable to feed at a variable I rate through an extended path an inset web having preprinted matter disposed at regular intervals along the length thereof, of mechanism for ensuring registration of said inset web with the product of a press with which it is intended to register, said mechanism including a device for detecting incorrect registration of said inset web, apparatus for varying the length of the said extended path to efiect an immediate local longitudinal adjustment of the web and apparatus for regulating the actuation of said feeding means, said device for detecting incorrect registration, serving to impart an impulse to both said apparatus to initiate operation thereof.

THOMAS HENRY FISHIBURN. 

